Wednesday, September 16, 2015

Potential and Kinetic Energy

Potential and Kinetic Energy

     Potential and Kinetic energy is about how everything around us including us works, moves and transforms the world around us. It is very important and it's all around us.

     There are a lot of forms of energy around us which are divided into two big categories, Kinetic and Potential energy. Inside potential there are four types of energy including gravitational and elastic energy. And kinetic energy has five forms, for example sound and light energy. 

     The law of energy conservation says that energy can never created or destroyed,but can always be transformed from one form to another. For example in a light bulb. The light bulb turns electrical energy from the wires and transforms it into light and heat energy. But it never gets destroyed or disappears.

      Potential energy is energy that is stored in an object. There are four forms of potential energy, elastic, gravitational, chemical and nuclear. One example of potential energy is a set of batteries they are filled with chemical energy, and when you put them in an object it transfers it's chemical energy into other forms of energy. 
     Kinetic energy is energy that is moving. There are five forms of kinetic energy, electric, thermal, light, sound and mechanical. One example of kinetic energy is when light energy is traveling. Another one is when you are playing an instrument you are creating   sound waves which move until they get to you, so it makes it kinetic energy.
    So what? Energy is very important to us for us to get a better understanding of how everything around us works. By understanding how everything around us works we will be able to innovate and create new things and have a better understanding who we are and answer things we never could. Remember everything has energy.

Monday, September 14, 2015

How does the kinetic energy of the object affect the speed of an object?

Graphing Velocity & Kinetic Energy Class Reflection

I think the kinetic energy of an object affects the speed because the more kinetic energy the car or thing that is moving has the more speed it will have. The potential (gravitational) energy from the top of the ramp changes into kinetic (mechanical) energy when the car starts to go down. Then when the car is in the bottom it turns back to potential (heat and sound) energy which decreases the car's speed. I think that the graph is shaped like it is because when the car gets to the bottom of the ramp it is the moment when the car is at it's maximum speed but when the ground is flat the speed decreases again. In the kinetic energy graph we could see that the place were the most kinetic energy was used was in the end of the ramp after the potential (gravitational) energy turned into kinetic (mechanical). But then it turned into potential energy so the mechanical energy turned into sound and heat energy.